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(11)

EP 4 204 294 A1

(12)

(43) Date of publication: 05.07.2023 Bulletin 2023/27 (21) Application number: 21862797.4 (22) Date of filing: 27.08.2021

(51) International Patent Classification (IPC):  B63B 35/44(2006.01) B63B 35/00(2020.01) B63B 35/40(2006.01) E21B 41/00(2006.01) B63B 21/66(2006.01) (52) Cooperative Patent Classification (CPC): E21B 43/0107; E21B 43/017; E21B 33/0355; B63B 1/107; B63B 2001/126; B63B 2001/128; B63B 35/4413 (86) International application number: PCT/US2021/047888 (87) International publication number: WO 2022/047118 (03.03.2022 Gazette 2022/09)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 27.08.2020 US 202063070826 P (71) Applicant: Kellogg Brown & Root LLC Houston, Texas 77002 (US)	(72) Inventors: D'SOUZA, Richard, B. Houston, TX 77002 (US) JARRELL, Brian, Curtis Houston, TX 77002 (US) ANDERSEN, David, Brian Houston, TX 77002 (US) SARWONO, Bambang, Abimanju Houston, TX 77002 (US) (74) Representative: Weickmann & Weickmann PartmbB  Postfach 860 820 81635 München 81635 München (DE)